I think Universal could easily plan 2 dry parks, a water park and entertainment district on their land with a ton of hotels if they take a page out of .. in Germany.
Below you see one hotel as a backdrop in the park. Ik makes for desirable rooms (the other side will have pool view so no bad views anywhere) and it blocks out the outside world very effectively.
They have 3 large hotels and the total amount of land is actually very small.